File: bpf_dsl_forward.h

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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SANDBOX_LINUX_BPF_DSL_BPF_DSL_FORWARD_H_
#define SANDBOX_LINUX_BPF_DSL_BPF_DSL_FORWARD_H_

#include <memory>

#include "sandbox/sandbox_export.h"

namespace sandbox {
namespace bpf_dsl {

// The bpf_dsl_forward.h header provides forward declarations for the
// types defined in bpf_dsl.h. It's intended for use in user headers
// that need to reference bpf_dsl types, but don't require definitions.

namespace internal {
class ResultExprImpl;
class BoolExprImpl;
}

using ResultExpr = std::shared_ptr<const internal::ResultExprImpl>;
using BoolExpr = std::shared_ptr<const internal::BoolExprImpl>;

}  // namespace bpf_dsl
}  // namespace sandbox

namespace std {
extern template class SANDBOX_EXPORT
    shared_ptr<const sandbox::bpf_dsl::internal::BoolExprImpl>;
extern template class SANDBOX_EXPORT
    shared_ptr<const sandbox::bpf_dsl::internal::ResultExprImpl>;
}  // namespace std

#endif  // SANDBOX_LINUX_BPF_DSL_BPF_DSL_FORWARD_H_